18426071 has 2 divisors, whose sum is σ = 18426072. Its totient is φ = 18426070.

The previous prime is 18426061. The next prime is 18426091. The reversal of 18426071 is 17062481.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18426071 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18426041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9213035 + 9213036.

It is an arithmetic number, because the mean of its divisors is an integer number (9213036).

Almost surely, 2^18426071 is an apocalyptic number.

18426071 is a deficient number, since it is larger than the sum of its proper divisors (1).

18426071 is an equidigital number, since it uses as much as digits as its factorization.

18426071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 18426071 is about 4292.5599588125. The cubic root of 18426071 is about 264.1258534848.

The spelling of 18426071 in words is "eighteen million, four hundred twenty-six thousand, seventy-one".